invalid Synonyms

Synonyms

Strongest:

• weak
• ailing
• sick
• fragile
• feeble
• frail
• dying
• sickly
• weakly

Strong:

• delicate
• challenged
• incurable
• poorly
• moribund
• debilitated
• bedridden
• weakened
• fading
• lame
• incapacitated

Weak:

• unwell
• infirm
• decrepit
• worn-out
• unhealthy
• bedfast
• indisposed
• unsound
• peaked
• enfeebled
• ill

Antonyms

Strongest:

• healthy
• well
• whole
• well
• healthy
• whole

Strong:

• hale
• fit
• sound
• wholesome
• fit
• wholesome
• hale
• sound

Weak:

• able-bodied
• hearty
• hearty
• able-bodied
• well-conditioned
• well-conditioned

invalid Meaning

Wordnet

invalid (n)

someone who is incapacitated by a chronic illness or injury

Wordnet

invalid (v)

force to retire, remove from active duty, as of firemen

injure permanently

Wordnet

invalid (a)

having no cogency or legal force

Wordnet

invalid (s)

no longer valid

Webster

invalid (a.)

Of no force, weight, or cogency; not valid; weak.

Having no force, effect, or efficacy; void; null; as, an invalid contract or agreement.

A person who is weak and infirm; one who is disabled for active service; especially, one in chronic ill health.

Webster

invalid (n.)

Not well; feeble; infirm; sickly; as, he had an invalid daughter.

Webster

invalid (v. t.)

To make or render invalid or infirm.

To classify or enroll as an invalid.

invalid Sentence Examples

1. The doctor deemed the patient's medical certificate invalid due to missing information.
2. His driver's license became invalid after he failed to renew it on time.
3. The coupon code she tried to use at the checkout was invalid and could not be applied.
4. The contract was rendered invalid because it lacked the necessary signatures.
5. Due to the storm, many train tickets became invalid, causing confusion among travelers.
6. His argument was deemed invalid by the committee because it lacked sufficient evidence.
7. The password he entered was invalid, so he couldn't access his email account.
8. The deed to the property was declared invalid after it was discovered to be forged.
9. The warranty on the product was invalid because it had expired.
10. The parking permit displayed on his car was invalid, leading to a parking ticket.

FAQs About the word invalid

What is the meaning of the word invalid

someone who is incapacitated by a chronic illness or injury, force to retire, remove from active duty, as of firemen, injure permanently, having no cogency or l

What are the synonyms of the word invalid

weak, ailing, sick, fragile, feeble, frail, dying, sickly, weakly, delicate

What are the antonyms of the word invalid

healthy,well, whole, well, healthy, whole, hale, fit,sound, wholesome

What is the usage of word invalid

The doctor deemed the patient's medical certificate invalid due to missing information.

His driver's license became invalid after he failed to renew it on time.

How to use the word invalid in a sentence?

The coupon code she tried to use at the checkout was invalid and could not be applied.

The contract was rendered invalid because it lacked the necessary signatures.